Christine_ASUSHi OTONGThank you for your asking. You may try, yet in general procedure, I suggest you to update to WW-15.2016.1905.514 first, then perform manual update to WW-AOSP-16.0200.1907.28.https://www.asus.com/Phone/ZenFone-4-Max-ZC554KL/HelpD...